package cn.wolfcode.web.interceptor;

import cn.wolfcode.util.UserContext;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class CheckLoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //请求是静态资源(/css/system/banner.png)，handler对应的类===>class org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler
        //请求是动态资源(/employee/list),handler对应的实例===>class org.springframework.web.method.HandlerMethod
        /*if (handler instanceof HandlerMethod){
            //拦截到的请求是动态的请求
            //判断是否有登录，放行，没有登录跳转到登录页面
            Object emp = UserContext.getCurrentUser();
            if (emp==null){
                response.sendRedirect("/login.html");
                return false;
            }
        }*/
        return true;
    }
}
